Characterizing stress concentration by metal magnetic memory signal of H_{p}(x)

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Dong, Shiyun^{a; *} | Wang, Dan^a | Xu, Binshi^a | Shi, Changliang^a

Affiliations: [a] National Key Laboratory for Remanufacturing, 21 Dujiakan, Fengtai, Beijing 100072, China

Correspondence: [*] Corresponding author. Tel.: +86 10 66718541; Fax: +86 10 66717144; E-mail: [email protected]

Abstract: A novel method for quantitative characterization of stress concentration based on the tangential component of metal magnetic memory (MMM) signal, H_{p}(x), was studied via fatigue testing and MMM testing of notched plate samples. In this research, the changing regularity of H_{p}(x) signals is found out. A method to calculate stress concentration factor from H_{p}(x) signals is established, and a new conception of magnetic stress concentration factor K_{H}, H_{p}(x)_{max}/H_{p}(x)_{ave}, is put forward to quantitatively characterize stress concentration in mechanical components. The research provides the potential possibility of quantitative inspection for metal magnetic memory testing.

Keywords: Stress concentration, metal magnetic memory, quantitative characterization, magnetic stress concentration factor

DOI: 10.3233/JAE-2010-1241

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1219-1223, 2010